1. Comanche Peak Nuclear Power Plant Existing and Proposed Units American Society of Civil Engineers Dallas Chapter November 1, 2010

2. 1 Comanche Peak History  Unit 1 - Commercial Operation August 1990  20 years of Operation  Unit 2 - Commercial Operation August 1993  17 years of Operation  Squaw Creek Reservoir  Closed for security reasons after September 11, 2001  Reopened to public for fishing earlier this year

3. 22 Comanche Peak Units 1 & 2 ZeroSafety Incidents 98.1%Capacity factor (availability) of existing units Zero Greenhouse gas emissions (main units) ~ 2,500Megawatts of electric generating capacity ~ $11 BillionCost of Units 1 & 2 20Years of Operation for Unit 1

4. 3 Unit 1 & 2 Operation Overview  Top priority is to maintain nuclear and personnel safety  Excellent results  Ongoing corrective action plan  Focus on management behaviors that maximize solutions  Unique cooperation within industry to share information  Constructive culture led by Servant Leaders  Costs are low – in top 5% of industry

5. 44 Units 1 & 2 Area Impacts 1,220 Employees and team members. $100 Million Current annual Comanche Peak payroll. Average salary and benefits of plant employees is about $80,000/year. $1 Billion Total of tax payments and other monetary donations to local communities. Over $615,000 Raised for Hood County United Way in past 4 years. $1.1 Million Ongoing average annual payments for the construction of Lake Granbury for the past 38 years. When payments are complete, we will have spent $46 million to fully underwrite the construction cost of Lake Granbury.

6. 5 Comanche Peak Oversight  Created by nuclear industry  Helps industry achieve operational excellence  Evaluates & assists  Accredits training  U.S. Regulatory Agency  Develops rules & regulations  Inspects plants Nuclear Committee Comanche Peak Operations Review Committee  Required by Technical Specifications  Includes off-site industry experts  Quarterly intensive review of performance  Reports to CNO & provides feedback to the Board  Committee of Luminant Board  Receives periodic reports of CPNPP performance  Reports to the Board QA

7. 66 More than 11 Million New Texans by 2040… Texas’ Projected Population Growth Assuming Net Migration Equal to 2000-2040 Millions Source: Texas State Data Center

8. 77 …Means Additional Electric Demand and New Generation Needs Increased Electric Demands MW Source: ERCOT

9. 8 Overview of Proposed Expansion (Units 3 & 4)  1700 MW each unit; 3400 MW total  Uses existing Comanche Peak site and infrastructure  Comanche Peak Nuclear Power Company – Joint venture between Luminant and Mitsubishi Heavy Industries  Attractive, emissions-free growth opportunity Proposed Existing

10. 99 Benefits of Potential Expansion Safe Operations: Strong history of safe operations Clean-Air Energy: Zero greenhouse gas emissions (existing main units) Dependable Power: High annual availability factors Advanced Technology: Improved nuclear design Ratepayer Certainty: Owners pay for construction – not ratepayers

11. 10 Future Economic Benefits of Proposed Expansion (Perryman Group) 10  $22 billion in Texas Economic Impact: Including increased retail sales, personal income and gross state product. This would be the largest economic development project in state history.  Thousands of New Jobs: In addition to thousands of construction jobs, the new units would create about 1,000 new, on-site jobs. With the economic development multiplier, this is expected to create a total of 6,200 Texas jobs.  Increased State Revenue: State tax revenue is projected to increase by more than $490 million during development and construction – by more than $30 million annually once the plant is operational.

12. 11 Potential Construction of Comanche Peak 3 & 4 (Especially for Engineers) > 5 millionCubic yards of earth to be moved 90,000Tons of rebar ~ 1 millionYards of concrete to be poured > 12 millionFeet of cable > 30 millionConstruction man-hours to complete > 40,000Tons of structural steel ~ 8 millionSquare feet of formwork

13. 12 Project Milestones 2006Announced Potential Expansion Plans 2007 Selected Mitsubishi US-APWR Design APWR: Advanced Pressurized Water Reactor 2008 Submitted License Application to Nuclear Regulatory Commission 2010Draft Environmental Impact Study 2011NRC Safety Evaluation Report Development 2012Additional NRC Review 2013Possible License Issued 2013+Decision About Whether to Build 2019–2020Earliest Possible Time New Units Operational

14. 13  Nuclear Regulatory Commission Licensing process  Federal Loan Guarantee process  www.ExpandComanchePeak.com Looking Forward

15. 14 Questions